| Package | Description | 
|---|---|
| org.activiti.engine | Public API of the Activiti engine. Typical usage of the API starts by the creation of a ProcessEngineConfiguration(typically based on a configuration file), from which aProcessEnginecan be obtained.Through the services obtained from such a ProcessEngine, BPM and workflow operation 
    can be executed:RepositoryService:  ManagesDeploymentsRuntimeService:  For starting and searchingProcessInstancesTaskService:  Exposes operations to manage human (standalone)Tasks, 
    such as claiming, completing and assigning tasksIdentityService:  Used for managingUsers,Groups and the relations between themManagementService:  Exposes engine admin and maintenance operations,
    which have no relation to the runtime exection of business processesHistoryService:  Exposes information about ongoing and past process instances.FormService:  Access to form data and rendered forms for starting new process instances and completing tasks. | 
| org.activiti.engine.history | Classes related to the  HistoryService. | 
| Modifier and Type | Method and Description | 
|---|---|
| HistoricTaskInstanceQuery | HistoryService. createHistoricTaskInstanceQuery()Creates a new programmatic query to search for  HistoricTaskInstances. | 
| Modifier and Type | Method and Description | 
|---|---|
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. finished()Only select historic task instances which are finished. | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. orderByDeleteReason()Order by task delete reason (needs to be followed by  Query.asc()orQuery.desc()). | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. orderByHistoricActivityInstanceId()Order by the historic activity instance id this task was used in (needs to be followed by  Query.asc()orQuery.desc()). | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. orderByHistoricTaskInstanceDuration()Order by duration (needs to be followed by  Query.asc()orQuery.desc()). | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. orderByHistoricTaskInstanceEndTime()Order by end time (needs to be followed by  Query.asc()orQuery.desc()). | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. orderByHistoricTaskInstanceStartTime()Order by start time (needs to be followed by  Query.asc()orQuery.desc()). | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. processFinished()Only select historic task instances which are part of a process instance which is already finished. | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. processUnfinished()Only select historic task instances which are part of a process instance which is not finished yet. | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. taskCompletedAfter(Date endDate)Only select select historic task instances which are completed after the given date | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. taskCompletedBefore(Date endDate)Only select select historic task instances which are completed before the given date | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. taskCompletedOn(Date endDate)Only select select historic task instances which are completed on the given date | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. taskDeleteReason(String taskDeleteReason)Only select historic task instances with the given task delete reason. | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. taskDeleteReasonLike(String taskDeleteReasonLike)Only select historic task instances with a task description like the given value. | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. taskParentTaskId(String parentTaskId)Only select subtasks of the given parent task | 
| HistoricTaskInstanceQuery | HistoricTaskInstanceQuery. unfinished()Only select historic task instances which aren't finished yet. | 
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